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19: Review Questions
List two names other than GTAW that are used to refer to the gas tungsten arc welding process.
A tungsten electrode is called a(n) _____ electrode because it does not become part of the weld.
A(n) _____ welding machine is used in GTAW. This type of machine allows the welder to vary the _____ slightly by changing the arc length.
Which type of welding current applies most of the heat to the base metal and gives the best penetration?
What is used to prevent the current from stopping during the electrode positive half cycle when AC welding?
Which of the following part(s) of the torch must also be changed when a different size tungsten electrode is used?
A. Torch body.
B. Collet.
C. End cap.
D. Collet body.
Which of the cables on a water-cooled torch serves two purposes? What are those two purposes?
A(n) _____ is used to reduce the cylinder pressure of shielding gas to a usable level. A(n) _____ is used to control the amount of shielding gas used.
Why is a post flow of shielding gas used with GTAW?
True or False?
Gloves worn for GTAW are thick leather to protect the welder from the intense heat and rays of the arc.
A. True
B. False
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